JAN., 1909. BIRDS OF ILLINOIS AND WISCONSIN CORY. 537 



Distr.: "Eastern North America, west to the Plains, and from 

 southern Labrador south through eastern Mexico to Panama, breed- 

 ing from th,e Northern States northward. Casual in Greenland." 

 (A. O. U.) 



Adult: Upper mandible, brownish black; under mandible, yellow- 

 ish white; upper parts, olive green; throat and under parts, greenish 

 yellow, tinged with olive on the breast and sides; wing coverts, tipped 

 with yellowish white (buff in immature birds), forming distinct bands; 

 eye ring, pale yellow. 



Length, 5.60; wing, 2.60; tail, 2.18; bill, .37. 



A not uncommon migrant in Illinois and Wisconsin and an occa- 

 sional summer resident in the latter state, where it is known to breed. 

 Thure Kumlien is recorded as having taken three nests and eggs from 

 1860 to 1864, and L. Kumlien procured a nest in a tamarack swamp 

 near Albion, June 25, 1891. 



The nest of this species is composed of moss and grass placed on an 

 old log or mossy bank. The eggs are usually four, dull white, marked 

 with cinnamon brown more heavily at the larger end. They measure 

 about .72 x .52 inches. 



2 1 3. Empidonax virescens (VIEILL.) . 

 GREEN-CRESTED FLYCATCHER. ACADIAN FLYCATCHER. 



Distr.: "Eastern United States, north to southern New York 

 and southern Michigan, west to the Plains, south to Cuba and Costa 

 Rica. Rare or casual in southern New England (Hyde Park, Mass.)." 

 (A. O. U.) 



Adult: First primary, about as long as fifth; upper mandible, 

 dark brown; under mandible, dull whitish or pale flesh color in life; 

 upper plumage, clear olive green; under parts, whitish, washed with 

 olive on sides of body and on the breast; throat, whitish; belly, 

 generally tinged with pale yellow; eye ring and wing bars, buffy white 

 or pale tawny white. Fall birds have the yellow somewhat brighter- 

 Length, 5.75 to 6.20; wing, 2.80 to 3; tail, 2.50 to 2.75; bill, .50. 

 The Green-crested Flycatcher is a rather common summer resi- 

 dent throughout Illinois, where it breeds. Kumlien and Hollister do 

 not include this species in their Birds of Wisconsin, but this Museum 

 possesses a nest and eggs taken by Mr. John F. Ferry near Lake Forest, 

 Illinois, and several specimens have been taken so near the Wisconsin 

 line that there is little doubt of its occurrence, at least in the extreme 

 southern portion of that state. 



The majority breed in June in this latitude. The nest is a flat 



